Jermy: Nothing more unhelpful than US marine shooting rampage

Commodore Steven Jermy, former strategy director at the British Embassy in Kabul, predicts to the Today programme the influence that yesterday's killing spree by a rogue US sergeant will have:

"This will sit in the Al-Qaida narrative, and will be a key radicalising force.

"I can't think of anything more unhelpful at this stage of the campaign.

"But we must stick with the plan, I still see an advantage to us staying on."